CN111969334A - Multi-frequency array antenna and base station - Google Patents
Multi-frequency array antenna and base station Download PDFInfo
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- CN111969334A CN111969334A CN202010808666.5A CN202010808666A CN111969334A CN 111969334 A CN111969334 A CN 111969334A CN 202010808666 A CN202010808666 A CN 202010808666A CN 111969334 A CN111969334 A CN 111969334A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Abstract
The embodiment of the disclosure relates to a multi-frequency array antenna and a base station, wherein N broadband radiation units and M high-frequency radiation units are coaxially arranged on a straight line; the N broadband radiation units are arranged at equal intervals according to a first set value, and the high-frequency radiation units are arranged between at least one group of two adjacent broadband radiation units; the distance between the two high-frequency radiation units which are sequentially arranged together and the distance between the high-frequency radiation unit and the broadband radiation unit which are sequentially arranged together are smaller than the first set value; the low-frequency ports of the K combiners and the remaining broadband radiation units which are not connected with the combiners are connected with corresponding low-frequency feed networks to form a low-frequency array antenna; the high-frequency ports of the K combiners and the M high-frequency radiation units are connected with corresponding high-frequency feed networks to form a high-frequency array antenna, so that the performance of the multi-frequency array antenna is improved.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of communication, in particular to a multi-frequency array antenna and a base station.
Background
In order to implement a dual-band or multi-band antenna in a single-row array antenna, a general scheme is to design a wideband radiating element capable of covering multiple required frequency bands, wherein the wideband radiating elements are uniformly arranged to form an antenna array, each wideband radiating element in the antenna array is connected to a combiner, and signals of each frequency band are separated out by the combiner and transmitted to a corresponding feed network.
However, since the broadband radiation units in the antenna array can cover multiple frequency bands, and the broadband radiation units are uniformly arranged, which is equivalent to that the antenna spacing of the antenna arrays of different frequency bands is the same, but in actual situations, the antenna spacing required for the antennas of different frequency bands to achieve the optimal performance is different, and the array antennas provided by the related art cannot meet the requirements of the antennas of different frequency bands on the antenna distance, and the antennas cannot achieve the optimal performance.
Disclosure of Invention
In order to solve the technical problem or at least partially solve the technical problem, embodiments of the present disclosure provide a multi-frequency array antenna and a base station.
A first aspect of an embodiment of the present disclosure provides a multi-frequency array antenna, including:
the broadband antenna comprises N broadband radiation units, M high-frequency radiation units and K combiners, wherein one combiner is connected with one broadband radiation unit, and N is greater than or equal to K; the N broadband radiation units and the M high-frequency radiation units are coaxially arranged on the same straight line; the N broadband radiation units are arranged at equal intervals according to a first set value, and at least one group of high-frequency radiation units are arranged between two adjacent broadband radiation units; the distance between the two high-frequency radiation units which are sequentially arranged together and the distance between the high-frequency radiation units and the broadband radiation unit which are sequentially arranged together are smaller than a first set value; the low-frequency ports of the K combiners and the remaining broadband radiation units which are not connected with the combiners are connected with corresponding low-frequency feed networks to form a low-frequency array antenna; the high-frequency ports of the K combiners and the M high-frequency radiation units are connected with corresponding high-frequency feed networks to form a high-frequency array antenna; the broadband radiation unit covers all working frequency bands of the multi-frequency array antenna, and N, M, K is a positive integer.
In one embodiment, the distance between two high-frequency radiation units arranged in sequence and the distance between the high-frequency radiation unit and the broadband radiation unit arranged in sequence on the multi-frequency array antenna are both configured to be a second set value, and the second set value is smaller than the first set value.
In one embodiment, the number N of broadband radiating elements may be configured to be greater than the number M of high frequency radiating elements.
In one embodiment, one broadband radiating element may be disposed between every two high-frequency radiating elements.
In one embodiment, the number N of broadband radiating elements may be configured to be smaller than the number M of high frequency radiating elements.
In one embodiment, the broadband radiating element may cover two or more high frequency bands.
In one embodiment, the M high-frequency radiating elements may operate in two or more high-frequency bands.
In one embodiment, the K combiners may be multi-frequency combiners.
A second aspect of the embodiments of the present disclosure provides a base station, which includes the multi-frequency array antenna of the first aspect.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the embodiment of the disclosure connects one combiner to one broadband radiation unit by configuring N broadband radiation units, M high-frequency radiation units and K combiners, and coaxially arranges the N broadband radiation units and the M high-frequency radiation units on a straight line, so that the N broadband radiation units are arranged at equal intervals according to a first set value, a high-frequency radiation unit is arranged between at least one group of two adjacent broadband radiation units, the distance between the two sequentially arranged high-frequency radiation units and the distance between the sequentially arranged high-frequency radiation units and the broadband radiation units are smaller than the first set value, a low-frequency array antenna is formed by connecting the low-frequency ports of the K combiners and the remaining broadband radiation units which are not connected with the combiners with corresponding low-frequency feed networks, and the high-frequency ports of the K combiners and the M high-frequency radiation units are connected with the corresponding high-frequency feed networks, forming a high-frequency array antenna, and forming a multi-frequency array antenna by the low-frequency array antenna and the high-frequency array antenna. Because this embodiment of this disclosure has configured the high frequency radiation unit alone, and set up the high frequency radiation unit between two at least adjacent wide band radiation units of a set of, make two arrange the distance between the high frequency radiation unit together in proper order, and the distance between high frequency radiation unit and the wide band radiation unit that arrange together in proper order all is less than the distance between the wide band radiation unit, thereby on the basis of having guaranteed the antenna miniaturization, compromise the different requirements of high frequency antenna and low frequency antenna to the antenna interval, make the performance of low frequency array antenna and high frequency array antenna among the multifrequency array antenna obtain obvious promotion, the performance of multifrequency array antenna has been improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a multi-frequency array antenna provided in an embodiment of the present disclosure;
fig. 2 is a schematic diagram of an antenna pitch of a multi-frequency array antenna provided in an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another multi-frequency array antenna provided in the embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of another multi-frequency array antenna provided in the embodiment of the present disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Fig. 1 is a schematic structural diagram of a multi-frequency array antenna provided in an embodiment of the present disclosure, and as shown in fig. 1, the multi-frequency array antenna provided in this embodiment at least may include: the N broadband radiation units 11, the M high-frequency radiation units 12, and the K combiners 13 and N, M, K are all positive integers.
The wideband radiating element 11 may cover all operating frequency bands of the multi-frequency array antenna, where the operating frequency bands may include a low-frequency operating frequency band and a high-frequency operating frequency band. The M high-frequency radiating elements 12 may all operate in one high-frequency band, or may operate in two or more high-frequency bands. All the operating frequency bands of the M high-frequency radiating elements 12 are covered by the broadband radiating element 11.
The combiner 13 may be a dual-frequency combiner or a multi-frequency combiner, and is configured to separate signals of multiple frequency bands on the broadband radiating unit 11 and transmit the signals to the corresponding high-frequency feeding network 14 or low-frequency feeding network 15 through the corresponding high-frequency port or low-frequency port, where the high-frequency feeding network outputs high-frequency signals and the low-frequency feeding network outputs low-frequency signals.
Specifically, N broadband radiation units 11 and M high-frequency radiation units 12 in the present embodiment are coaxially arranged on a straight line. The N broadband radiation units 11 are arranged at equal intervals according to a first set value, and the high-frequency radiation units 12 are arranged between at least one group of two adjacent broadband radiation units 11. For example, in fig. 1, the 1 st broadband radiating element and the 2 nd broadband radiating element are two adjacent broadband radiating elements, the 2 nd broadband radiating element and the 3 rd broadband radiating element are two adjacent broadband radiating elements, and so on, the N-1 st broadband radiating element and the N th broadband radiating element are two adjacent broadband radiating elements, in this embodiment, the distances between the two adjacent broadband radiating elements are both the first set value, and in fig. 1, at least the high-frequency radiating elements are arranged between the 1 st broadband radiating element and the 2 nd broadband radiating element, and between the 2 nd broadband radiating element and the 3 rd broadband radiating element, by arranging the high-frequency radiating elements between the two adjacent broadband radiating elements, the space between the broadband radiating elements can be effectively utilized, so that the antenna is miniaturized, and the distance between the high-frequency radiating unit arranged between two adjacent broadband radiating units and the broadband radiating unit arranged together in sequence or the distance between the high-frequency radiating unit arranged together in sequence and the other high-frequency radiating unit arranged together in sequence is certainly smaller than the distance between the two adjacent broadband radiating units, so that the antenna spacing of the small low-frequency antenna array formed by the two adjacent broadband radiating units is certainly larger than the antenna spacing of the small high-frequency antenna array formed by the two broadband radiating units and the middle high-frequency radiating unit, and the antenna performance of the local part of the multi-frequency array antenna is improved. Although fig. 1 only shows the case where two high-frequency radiating elements are arranged between adjacent broadband radiating elements, it is understood that the arrangement is not the only arrangement. In fact, in other embodiments, the number of high-frequency radiating elements arranged between adjacent broadband radiating elements can be arbitrarily set according to requirements.
Further, the combiners 13 in the present embodiment are configured to be connected to the broadband radiation units 11 one-to-one, that is, one combiner 13 is connected to one broadband radiation unit 11. Here, the number N of the broadband radiation units 11 may be configured to be greater than or equal to the number K of the combiners. In this embodiment, the high-frequency ports of the K combiners and the M high-frequency radiating units are connected to the high-frequency feed network to form a high-frequency array antenna, and the low-frequency ports of the K combiners and the remaining broadband radiating units that are not connected to the combiner 13 are connected to the low-frequency feed network to form a low-frequency array antenna.
Further, considering that the antenna pitch required for the high-frequency antenna to obtain the best antenna performance is smaller than the antenna pitch required for the low-frequency antenna to obtain the best antenna performance, in the present embodiment, the distance between two sequentially arranged high-frequency radiating elements (for example, the distance between the 2 nd high-frequency radiating element and the 3 rd high-frequency radiating element) and the distance between the sequentially arranged high-frequency radiating element and the wide-frequency radiating element (for example, the distance between the 1 st high-frequency radiating element and the 1 st wide-frequency radiating element) may be set to be smaller than the first set value. Therefore, the distance between two adjacent antennas in the high-frequency array antenna is smaller than the antenna distance of the low-frequency array antenna, the requirements of the high-frequency array antenna and the low-frequency array antenna on the antenna distance are met, and the low-frequency array antenna can not cause signal coupling due to too close antenna distance when the high-frequency array antenna can obtain higher gain.
Further, in a possible implementation manner, the distance between two sequentially arranged high-frequency radiating units in the multi-frequency array antenna provided in this embodiment, and the distance between the sequentially arranged high-frequency radiating unit and the wideband radiating unit may be configured to be the same second set value smaller than the first set value.
For example, fig. 2 is a schematic diagram of an antenna pitch of a multi-frequency array antenna provided by an embodiment of the present disclosure, as shown in fig. 2, on the basis of the antenna structure shown in fig. 1, when M high-frequency radiation units in the multi-frequency array antenna shown in fig. 1 all operate on the same high-frequency band, considering that the requirement of the same high-frequency band for the antenna distance is the same, the distance between two high-frequency radiation units sequentially arranged together and the distance between the high-frequency radiation unit and the wide-frequency radiation unit sequentially arranged together in the multi-frequency array antenna may be set to be one third of a first set value, that is, assuming that the distance between two adjacent wide-frequency radiation units is L, the distance between two high-frequency radiation units sequentially arranged together and the distance between the high-frequency radiation unit and the wide-frequency radiation unit sequentially arranged together in the multi-frequency array antenna may be configured to be (1/3) L, therefore, the antenna spacing of the high-frequency array antenna formed by connecting the high-frequency ports of the K combiners and the M high-frequency radiation units with the high-frequency feed network is (1/3) L, and the antenna spacing of the low-frequency array antenna formed by connecting the low-frequency ports of the K combiners and the residual broadband radiation units which are not connected with the combiners with the low-frequency feed network is L, so that the antenna miniaturization is considered, the difference between the antenna spacing of the high-frequency array antenna and the antenna spacing of the low-frequency array antenna is realized, and the high-frequency array antenna and the low-frequency array antenna can obtain better antenna performance.
For example, in some embodiments, the arrangement between the broadband radiation unit and the high-frequency radiation unit may also be determined according to the number of the broadband radiation unit and the high-frequency radiation unit in the multi-frequency array antenna, so as to miniaturize the multi-frequency array antenna as much as possible. For example, in fig. 1, when the number N of the broadband radiation units 11 is smaller than the number M of the high-frequency radiation units 12, two or more high-frequency radiation units may be arranged between at least one group of two adjacent broadband radiation units, so that the high-frequency radiation units are arranged between two adjacent broadband radiation units as much as possible, and the space between two adjacent broadband radiation units is fully utilized, so that the size of the multi-frequency array antenna is miniaturized. For another example, fig. 3 is a schematic structural diagram of another multi-frequency array antenna provided in the embodiment of the present disclosure, as shown in fig. 3, when the number N of the wideband radiation units is greater than the number M of the high-frequency radiation units, one wideband radiation unit 32 may be arranged between every two high-frequency radiation units 31, so that the distance between two adjacent wideband radiation units 32 is D, the distance between the sequentially arranged wideband radiation units and the high-frequency radiation units is (1/2) D, and the high-frequency array antenna is formed by coaxially arranging the high-frequency radiation units and the wideband radiation units with a misalignment (1/2) D on a straight line together with K wideband radiation units, so as to maximally reduce the cross-sectional size of the antenna, achieve antenna miniaturization, and the number of the antenna units may be flexibly set, so that the gain and vertical plane beam width of each frequency band antenna may be flexibly adjusted, and the application requirements of different scenes are met. The high-frequency radiation unit only needs to be designed according to a high-frequency working frequency band, and the size of the radiation unit is relatively small, so that the mutual coupling effect of the array antenna can be effectively reduced; and the antenna spacing of the low-frequency array antenna is D, and the antenna spacing of the high-frequency array antenna is D/2, so that the array mode can effectively inhibit the vertical plane grating lobe of the high-frequency array antenna, and the optimal design of respective frequency bands is easily realized by reasonably selecting the antenna spacing.
For example, in some embodiments, the broadband radiation unit may cover two or more high frequency bands or two or more low frequency bands. For example, fig. 4 is a schematic structural diagram of another multi-frequency array antenna provided in the embodiment of the present disclosure, and as shown in fig. 4, all the high-frequency radiation units 41 in fig. 4 operate in the same high-frequency band. All the broadband radiating elements 42 cover the frequency band of the high-frequency radiating element 41, as well as two different low-frequency bands, which will be referred to as low-frequency band 1 and low-frequency band 2 for the moment. In this case, the high-frequency ports of all the combiners 43 and all the high-frequency radiating units 41 may be connected to the high-frequency feeding network 44, and the high-frequency feeding network 44 may output a high-frequency signal. The low-frequency ports 1 of all the combiners 43 are connected to the first low-frequency feed network 45, the low-frequency ports 1 of the combiners 43 output signals on the low-frequency band 1, and the first low-frequency feed network 45 outputs the low-frequency signals 1 according to the signals input by all the low-frequency ports 1. The low-frequency ports 2 of all the combiners 43 are connected to the second low-frequency feed network 46, the low-frequency ports 2 of the combiners 43 output signals in the low-frequency band 2, and the second low-frequency feed network 46 outputs the low-frequency signals 2 according to the signals input by all the low-frequency ports 2. Similarly, when the broadband radiation unit covers two or more high frequency bands or two or more low frequency bands, the antenna structure of the multi-frequency array antenna may be configured with reference to the structure of the embodiment of fig. 4, and details thereof are not repeated herein.
The embodiment of the disclosure connects one combiner to one broadband radiation unit by configuring N broadband radiation units, M high-frequency radiation units and K combiners, and coaxially arranges the N broadband radiation units and the M high-frequency radiation units on a straight line, so that the N broadband radiation units are arranged at equal intervals according to a first set value, a high-frequency radiation unit is arranged between at least one group of two adjacent broadband radiation units, the distance between the two sequentially arranged high-frequency radiation units and the distance between the sequentially arranged high-frequency radiation units and the broadband radiation units are smaller than the first set value, a low-frequency array antenna is formed by connecting the low-frequency ports of the K combiners and the remaining broadband radiation units which are not connected with the combiners with corresponding low-frequency feed networks, and the high-frequency ports of the K combiners and the M high-frequency radiation units are connected with the corresponding high-frequency feed networks, forming a high-frequency array antenna, and forming a multi-frequency array antenna by the low-frequency array antenna and the high-frequency array antenna. Because this embodiment of this disclosure has configured the high frequency radiation unit alone, and set up the high frequency radiation unit between two at least adjacent wide band radiation units of a set of, make two arrange the distance between the high frequency radiation unit together in proper order, and the distance between high frequency radiation unit and the wide band radiation unit that arrange together in proper order all is less than the distance between the wide band radiation unit, thereby on the basis of having guaranteed the antenna miniaturization, compromise the different requirements of high frequency antenna and low frequency antenna to the antenna interval, make the performance of low frequency array antenna and high frequency array antenna among the multifrequency array antenna obtain obvious promotion, the performance of multifrequency array antenna has been improved.
In addition, the embodiment of the present disclosure further provides a base station, where the base station includes the multi-frequency array antenna. The beneficial effects are similar to those of the above embodiments, and are not described in detail herein.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A multi-frequency array antenna, comprising:
the broadband antenna comprises N broadband radiation units, M high-frequency radiation units and K combiners, wherein one combiner is connected with one broadband radiation unit, and N is greater than or equal to K;
the N broadband radiation units and the M high-frequency radiation units are coaxially arranged on a straight line;
the N broadband radiation units are arranged at equal intervals according to a first set value, and the high-frequency radiation units are arranged between at least one group of two adjacent broadband radiation units;
the distance between the two high-frequency radiation units which are sequentially arranged together and the distance between the high-frequency radiation unit and the broadband radiation unit which are sequentially arranged together are smaller than the first set value;
the low-frequency ports of the K combiners and the remaining broadband radiation units which are not connected with the combiners are connected with corresponding low-frequency feed networks to form a low-frequency array antenna;
the high-frequency ports of the K combiners and the M high-frequency radiation units are connected with corresponding high-frequency feed networks to form a high-frequency array antenna;
the broadband radiation unit covers all working frequency bands of the multi-frequency array antenna, and N, M, K is a positive integer.
2. The multi-frequency array antenna of claim 1, wherein a distance between two sequentially arranged high-frequency radiating elements and a distance between a sequentially arranged high-frequency radiating element and a sequentially arranged wideband radiating element on the multi-frequency array antenna are configured as a second setting value, and the second setting value is smaller than the first setting value.
3. The multi-frequency array antenna of claim 1 or 2, wherein the number N of the broadband radiating elements is greater than the number M of the high-frequency radiating elements.
4. The multi-frequency array antenna of claim 3, wherein one broadband radiating element is disposed between every two high frequency radiating elements.
5. The multi-frequency array antenna of claim 1 or 2, wherein the number N of the broadband radiating elements is smaller than the number M of the high-frequency radiating elements.
6. The multi-frequency array antenna of claim 1, wherein the broadband radiating element covers two or more high frequency bands.
7. The multi-frequency array antenna of claim 1, wherein the M high-frequency radiating elements operate in two or more high-frequency bands.
8. The multi-frequency array antenna of claim 6 or 7, wherein the K combiners are multi-frequency combiners.
9. A base station comprising a multi-frequency array antenna according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010808666.5A CN111969334A (en) | 2020-08-12 | 2020-08-12 | Multi-frequency array antenna and base station |
| PCT/CN2020/140915 WO2022032972A1 (en) | 2020-08-12 | 2020-12-29 | Multi-frequency array antenna and base station |
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| CN202010808666.5A CN111969334A (en) | 2020-08-12 | 2020-08-12 | Multi-frequency array antenna and base station |
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| CN111969334A true CN111969334A (en) | 2020-11-20 |
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|---|---|---|---|---|
| WO2022032972A1 (en) * | 2020-08-12 | 2022-02-17 | 京信通信技术(广州)有限公司 | Multi-frequency array antenna and base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6529166B2 (en) * | 2000-09-22 | 2003-03-04 | Sarnoff Corporation | Ultra-wideband multi-beam adaptive antenna |
| CN102522628B (en) * | 2011-12-09 | 2014-05-14 | 清华大学 | High gain bidirectional end-fire antenna array applied to mine and tunnel |
| WO2013104260A1 (en) * | 2012-01-13 | 2013-07-18 | 京信通信系统（中国）有限公司 | Aerial control system and multi-frequency common aerial |
| CN111969334A (en) * | 2020-08-12 | 2020-11-20 | 京信通信技术(广州)有限公司 | Multi-frequency array antenna and base station |
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| WO2022032972A1 (en) * | 2020-08-12 | 2022-02-17 | 京信通信技术(广州)有限公司 | Multi-frequency array antenna and base station |
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